body {
    padding: 0;
    background-color: #ffffff;
    max-width: 750px;
    min-width: 320px;
    margin: 0 auto;
}

body * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "微软雅黑", "Times New Roman", Georgia, Serif;
    font-size: 12px;
}

input {
    outline: none;
}

a {
    text-decoration: none;
    color: #222;
}

li {
    list-style: none;
}

.float-left {
    float: left;
}

.float-right {
    float: right;
}

.clear-fix:after {
    display: table;
    content: '';
    clear: both;
}

.active {
    color: #ff5555;
}